FKIE_CVE-2026-68361
Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-19 17:20
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (corsair-psu) Stop device IO before calling hid_hw_stop
hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
corsairpsu_probe(). If the probe operation fails after "io start" has
been initiated, this race condition will result in a uaf vulnerability
[1].
CPU0 CPU1
==== ====
corsairpsu_probe()
hid_device_io_start()
... unlock driver_input_lock
hid_hw_stop()
kfree(hidraw) __hid_input_report()
... acquire driver_input_lock
hid_report_raw_event()
hidraw_report_event()
... access hidraw's list_lock // trigger uaf
Consequently, when corsairpsu_probe() fails and hid_hw_stop() needs to
be executed, the io_started flag is first cleared while holding the
driver_input_lock to prevent potential race conditions involving input
reports.
[1]
BUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
Call Trace:
hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577
hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076
__hid_input_report drivers/hid/hid-core.c:2152 [inline]
hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174
hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286
__usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657
dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005
Allocated by task 10:
hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606
hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277
hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387
corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782
Freed by task 10:
hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662
hid_disconnect drivers/hid/hid-core.c:2362 [inline]
hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407
corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826
Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().
[groeck: Updated subject and description;
call hid_device_io_stop() only if IO has been started]
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/hwmon/corsair-psu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "45dcd8a63069197f64dbda30509b9e224b74c0d8",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "c80ed058f31bb0251a748034d69feb376741dcb2",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "c0aae8d24f5e52d6910f97d59bc624e131f3ae1a",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "bb25bd980f2d9bd34558e1b1d16636e4945baf14",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
},
{
"lessThan": "9ab8656548cd737b98d0b19c4253aff8d68e97f4",
"status": "affected",
"version": "d115b51e0e567199c821fc39e13b6af7e78f247d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/hwmon/corsair-psu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"lessThan": "5.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (corsair-psu) Stop device IO before calling hid_hw_stop\n\nhid_hw_stop() does not stop the device IO.\n\nThis results in a race condition between hid_input_report() and the point\nimmediately following the execution of hid_device_io_start() within\ncorsairpsu_probe(). If the probe operation fails after \"io start\" has\nbeen initiated, this race condition will result in a uaf vulnerability\n[1].\n\nCPU0\t\t\t\tCPU1\n====\t\t\t\t====\ncorsairpsu_probe()\n hid_device_io_start()\n ... unlock driver_input_lock\n hid_hw_stop()\n kfree(hidraw)\t\t\t__hid_input_report()\n\t\t\t\t ... acquire driver_input_lock\n\t\t\t\t hid_report_raw_event()\n\t\t\t\t hidraw_report_event()\n\t\t\t\t ... access hidraw\u0027s list_lock // trigger uaf\n\nConsequently, when corsairpsu_probe() fails and hid_hw_stop() needs to\nbe executed, the io_started flag is first cleared while holding the\ndriver_input_lock to prevent potential race conditions involving input\nreports.\n\n[1]\nBUG: KASAN: slab-use-after-free in rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56\nCall Trace:\n hidraw_report_event+0x5d/0x3a0 drivers/hid/hidraw.c:577\n hid_report_raw_event+0x311/0x1730 drivers/hid/hid-core.c:2076\n __hid_input_report drivers/hid/hid-core.c:2152 [inline]\n hid_input_report+0x44e/0x580 drivers/hid/hid-core.c:2174\n hid_irq_in+0x47e/0x6d0 drivers/hid/usbhid/hid-core.c:286\n __usb_hcd_giveback_urb+0x3b3/0x5e0 drivers/usb/core/hcd.c:1657\n dummy_timer+0x8a9/0x47d0 drivers/usb/gadget/udc/dummy_hcd.c:2005\n\nAllocated by task 10:\n hidraw_connect+0x57/0x430 drivers/hid/hidraw.c:606\n hid_connect+0x5bf/0x19d0 drivers/hid/hid-core.c:2277\n hid_hw_start+0xa8/0x120 drivers/hid/hid-core.c:2387\n corsairpsu_probe+0xd9/0x3c0 drivers/hwmon/corsair-psu.c:782\n\nFreed by task 10:\n hidraw_disconnect+0x4f/0x60 drivers/hid/hidraw.c:662\n hid_disconnect drivers/hid/hid-core.c:2362 [inline]\n hid_hw_stop+0x101/0x1e0 drivers/hid/hid-core.c:2407\n corsairpsu_probe+0x327/0x3c0 drivers/hwmon/corsair-psu.c:826\n\nFix the problem by calling hid_device_io_stop() before calling\nhid_hw_stop().\n\n[groeck: Updated subject and description;\n call hid_device_io_stop() only if IO has been started]"
}
],
"id": "CVE-2026-68361",
"lastModified": "2026-08-19T17:20:45.700",
"metrics": {},
"published": "2026-08-10T13:20:28.620",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/45dcd8a63069197f64dbda30509b9e224b74c0d8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/9ab8656548cd737b98d0b19c4253aff8d68e97f4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/bb25bd980f2d9bd34558e1b1d16636e4945baf14"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c0aae8d24f5e52d6910f97d59bc624e131f3ae1a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c80ed058f31bb0251a748034d69feb376741dcb2"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e6e1e0f3050d1a1a3ea1c9d6253363e87fdad67a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ec477af3a7e8d3964e62fd24ef01cdebb96b8e4e"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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